Hello. I'm getting my iMac next week, It's the one for $1200 USD and I was interested in upgrading my RAM into 8GB. As most of you guys told me here before it doesn't worth paying Apple to do it cause I can save about 50% $$ Doing it myself. So I was wondering first, Does the iMac comes with 1x RAM piece of 4GB? Or it comes 2x RAM pieces of 2GB each? Cause if it comes with one piece of 4GB RAM, It means I only got to buy another piece of 4GB RAM right? And my other questions is: Is it true that if I buy a Mac today I get the Mac OS X Lion upgrade for free? If so how are they gonna know when I bought it? ( I know it's not related to the iMac forum but It's instead of opening a new thread ). Thank you very much!